Very interesting read. However, he changed it before the bank added their signarture. I imagine that if you change the contract after a signature is added by one party, and then add your own signarture, that would surely be fraud... right?
The protagonist took the threat very seriously (as he should have) and in a later interview to banki.ru (i.e. banks.ru) said that he was fleeing the country to a destination he preferred to keep secret. Reason being the precise "4 years" that was used. Not 2, not 3, not 5. Meaning that the CEO had already made "arrangements".
Then 2 days later there was an article that both him and the bank have reached a peaceful resolution and were recalling all mutual lawsuits.